Here is the first bird wading just above the weir at the crossing of the trail. It seems to have much redder legs, coloration indicative of breeding season.
This is the second bird which we saw several hundred yards further upstream, across the river from the vulture roosting tree. Legs are less colorful than the first bird.
Update 2014-06-19 - Another one later in the season
|Yellow-crowned Night Heron - Canon EF 100-400mm f/4.5-5.6L - ISO-800, 400mm, f/5.6, 1/160sec|